If you post a picture or diagram it might help me.

Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?

It may drive like an unsprung truck when unloaded.

My worst experience with a truck with overly stiff rear springs was the uncomfortable fore-aft pitching motion. That was unbearable on long trips.

A picture can be seen at Hellwig Suspension, products, Load Control, Load Control Pro Series, LP-25 Installation Instruction. That is the Spring Set. It is a 1991 Chevy K1500 Extended Cab, 4x4 5.7 Liter, 350 V8 5 speed Manual Transmission. Everything is stock as far as Wheel and Tire Size

The springs are adjustable according to the manufacturer

I'd get the progressive adjustable ones. Any additional spring rate at the back is going to exaggerate a truck's basic tendency to spin out when unladen.

Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?

Of interest might be:

http://www.activesuspension.com/

I personally have no experience and do/do not endorse but the truck guys on the forums love'em.

Jim

I'm not seeing how the Roadmaster Active Suspension is 'active' in any way.

I can see how the devices might be effective against axle wrap, but it's also clear that they stress the stock springs in ways for which the springs were not designed, so expect some effect on spring life.

Conversely, my Navigator is equipped with air bags and leveling valves on the rear wheels. It rides like a limousine when unladen, and it doesn't ride badly when our 30 foot travel trailer is attached to the back with an equalizing hitch.

I have in the past fitted 'air shocks' and 'air lifts' to a fair assortment of large passenger cars and used those cars to carry fairly heavy loads or pull trailers. The air bags don't last forever, but a proper installation will usually get a couple of years' service out of them. Absent an onboard compressor and automatic leveling valves, you have to push a little compressed air into them to offset heavy loads, and use a tape measure to get the ride height right, but it's not a huge inconvenience. They may affect the unladen ride a little, because you need to keep a little pressure in them so they won't buckle.

Air Lift brand and other auxiliary air springs are available for most pickups, and deserve consideration for your application.

RV stores also sell several variations of completely passive polyurethane super jounce bumpers that might also be satisfactory.

Mike Halloran
Pembroke Pines, FL, USA

Use Ride rite air bags, and you can adjust easy side to side. I did them in a pickup with the air compressor and in cab controls, its very nice.
http://riderite.com/Ride-Rite%20Product%20Detail
(If this link is not allowed just delete it, I'm not advertising just pointing out what I have used, there maybe other brands too)

Yup, airsprings are a great solution.

Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?